Threaded joint for steel pipes containing a sealing device located at the level of the threading
US4828294A · kind A · utility
12Cited by
21References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | May 6, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded joint for steel pipes useable in particular for the petroleum industry is provided. The joint is formed by threaded male and female elements wherein one part of the thread of a first element is strongly applied against the thread of the other element. One of the elements contains a groove having a length of at least one thread pitch and a depth greater than the height of the threads. A sealing device is provided in the groove consisting of a synthetic lining whose volume and shape essentially correspond to the volume and shape of the play that would exist between the threads of the elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.